Alkali induced chromics and stable single crystal of opened-ring form of a new spirooxazine

Stable single crystal of the opened-ring form of a new spirooxazine was synthesized. Its structure was confirmed by X-ray crystallographic analysis. Its alkali induced chromism and thermochromism in the alkali medium were studied. A new kind of organic thermochromic paint indicating temperature having different chromogenic temperatures is made by this new spirooxazine in the presence of different solvents and different amines.